Radiator attachment



F. GADE.

RADIATOR ATTACHMENT. APPLICATION FILED NOV. 21, 1921.

1,417,312. Patented May 23, 1922.

wa -w In FRANK GADE, OF

cEIoneo, rLLIivors.

RADIATOR ATTACHMENT.

I Application filed November T 0 aZZ whom it may con ern:

Be it known that I, FRANK Glenna citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois. have invented new and useful Improvements in Radiator Attachments, of which the following is; a specification.

Thisinvention relates to attachments for motor-vehicle radiators designed to indicate the water level. in the same, and the invention has for its object to provide a novel and improved attachment of this kind which gives a signal who the water level goes down to such an extent that a replenishing of the water supply becomes in'iperativc to prevent overheating of the motor and damage to the radiator.

The object stated is attained by means of a combination and arrangen'ient parts to be hereinafter described and claimed. and in order that the same may be better understood, reference is had to the accompanying drawing, wherein:

Figure 1 is an elevation of the. derive in place on a radiator, and Fig. 9 is a central vertical section thereof.

Referring specifically to the drawing; 5 denotes a fragment of the upper tank of an ordinary motor-vehicle radiator, the same being provided with the usual filler necl: 5 provided with a closure 6 of the conventional type of screw cap.

In the top of the cap 6 is a central aperture in which seats a nipple 7 having above the cap an outstanding annular flange 7 by means of which there is clamped to the top of the cap an ornament 8 having the form of a crown. Below the top of the cap the nipple 7 carries a fastening nut 9 and a lock nut 10 for the latter, the nipple being exteriorly threaded for this purpose. The nut 9 screws against the under side of the cap to hold the ornament 8 firmly clamped between the flange 7 and the top of the cap.

The ornament S is surmounted by an in dicator 11 having the form of a Greek cross which-is carried by a light tubular shaft 12 passing through a central aperture in the top of the crown-like ornament 8, with a thin washer 13 and a cross pin 1% beneath the latter to prevent the tube from rising. l3eneath the top of the crown 8. the sl 12 has diametrically opposite longitudinal slots and extends into a tubular shaft 16 which passes downwardly through the nipple '7 into the tank 5 a sun' icient distance to dip into Specification of Letters Patented May 23, 1922.

2. 1921. Serial No. 516,?60.

the contents of the latter. The shafts 12 and 16 i free to rotate, and they are connected to turn together by cross pin 17 passing hrough shaft 16 and through the slots 15 of shaft 12. The two shafts are also loosely or telescopically connected, the shaft 16 being free to slide upwardly on shaft 12 to the extent of the length of the slots 15, the pin 1'? seating l oselyin said slots.

' On the lower end of shaft 16 is fastened a float 18 having a spirally fluted exterior so that it may also operate as an impeller for givii'lg a rotary motion to the shaft 16.

When the water level in the tank 5 is normal, the float 18 locates the shaft 16 high up on the shaft and shaft 16 seats over the slots 15 to close the same. As the water level goes down, the float l8 follows until the cross pin 1.? reaches the bottom of the slots 15. l f the water level continues to go down, the float is left suspended above the same, an the steam rising from the water and operating against the fluted exterior of the float 18 causes the same to rotate and to spin the shaft 16, this motion of shaft 16 be ing communicated to shaft 12, and as the shaft carries the indicator 11. the latter is whirled around, thus notifying the driver of the fact that the water level in the radiator has reached the danger point. The upper end of the shaft 16 acts to indicate ordinary fluctuations of the water level in the tank 5 so that the driver may observe whether the radiator needs water. If, through negligenes, or otherwise, the water is allowed to reach a dangerous low level, the hereinbefore described rotary motion of the float 18 takes plac to operate the indicator 11.

The attachment is very simple and highly efficient, and it can be easily applied to any ordinary radiator cap; or the cap may be part of t 1e device.

I claim:

1. A water-level indicator comprising a support a shaft rotatahly and slidably car ried by the support, an indicator carried by the shaft. and a floatfastener. to the lower end of the shaft, and having an impeller shape.

2. .51 water-level indicator comprising a support, a tubular s. it rotatz-thly and slidably carried by the support, an indicator, a tubular shaft carrying the indicator, a connection between the shafts for permitting their rotation together and a sliding movement of the first-mentioned shaft relative to the second-mentioned shaft, and a float carried by the first-mentioned shaft and having an impeller shape.

3. A Water-level indicator comprising a support, a tubular shaft rotatably and slidablycarried by the support, an indicator, a tubular shaft carrying the indicator, and provided with longitudinal slots, a cross pin carried by the first-mentioned shaft, said shaftslidably fittingthe second-mentioned shaft, and the cross pin seating in the aforesaid slot, and a float carried .by the first-- mentioned shaft and having an impeller shape. I

v 4. A water-level indicator comprising a support, a shaft rotatably and slidably carwhich the upper end of the shaft is operatively connected, said connection being a sliding one, means for limiting the downward sliding movement of the shaft, and a float fastened to the lower end of the shaft and having an impeller shape.

5. A water-level indicator comprising a support, a shaft rotatably carried by the support in pendent position, an impeller on the lower end of the shaft, and a rotatable indicator to which the upper end of the shaft is operatively connected.

In testimony whereof I affix my signature.

FRANK GADE. 

